<template>
	<div class="list" ref="wrapper">
		<div>
		<div class="area">
			<div class="title border-topbottom">当前城市</div>
			<div class="button-list">
				<div class="button-wrapper">
					<div class="button">{{this.currentCity}}</div>
				</div>

			</div>
		</div>
		<div class="area">
			<div class="title border-topbottom">热门城市</div>
			<div class="button-list">
				<div class="button-wrapper"
					v-for="item of hot"
					:key="item.id"
					@click="handleCityClick(item.name)">
					<div class="button">{{item.name}}</div>
				</div>

			</div>
		</div>
		<div class="area"
			v-for="(item,key) of cities"
			:key="key"
			:ref="key">
			<div class="title border-topbottom">{{key}}</div>
			<div class="item-list">
				<div class="item border-bottom"
					v-for="innerItem of item"
					:key="innerItem.id"
					@click="handleCityClick(innerItem.name)"
				>{{innerItem.name}}</div>
			</div>
		</div>

		</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations} from 'vuex'
export default {
  name: 'CityList',
  props: {
    cities: Object,
    hot: Array,
    letter: String
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  methods: {
    handleCityClick (city) {
      //				this.$store.dispatch('changeCity',city)
      //					this.$store.commit('changeCity',city)

      this.changeCity(city) // 直接用映射过来的方法
      this.$router.push('/')
    },
    ...mapMutations(['changeCity']) // 把changeCity 映射过来
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper,{
    	click:true
    })
    
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>

<style lang="stylus" scoped>
	@import "~styles/varibles.styl"
	.border-topbottom
		&:before
			border-color:#ccc
		&:after
			border-color:#ccc
	.border-bottom
		&:before
			border-color:#ccc
		&:after
			border-color:#ccc
	.list
		overflow:hidden

		position:absolute
		top:1.58rem
		left:0
		right:0
		bottom:0
		top:1.58rem
		.title
			line-height:.54rem
			background:#eee
			padding-left:.2rem
			color:#666
			font-size:.26rem
		.button-list
			overflow:hidden
			padding:.1rem .6rem .1rem .1rem
			.button-wrapper
				float:left
				width: 33.33%
				.button
					margin:.1rem
					padding:.1rem 0
					text-align:center
					border:0.02rem solid #ccc
					border-radius:.06rem
		.item-list
			.item
				line-height:.76rem
				color:#666
				padding-left:.2rem

</style>
